JPH10113686A - Floating island with vegetation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To significantly increase the purification effect for water of a vegetation floating island by inserting water-permeable containers which seal particles fixed with bacteria having a purifying effect for water into the vegetation base of the vegetation floating island so that the bacteria are bred by the water passing through the containers and diffused into the area around the island. SOLUTION: The vegetation floating island is produced by disposing plural floats 2 and a vegetation base 3 on a mesh plate 1 comprising a hard resin and inserting containers 4 which seal particles 4a fixed with bacteria having a purifying effect for water, covering the upper face of the island with a net 5 and engaging the net 5 to the edge of the mesh plate 1 to form a bag-like structure. The vegetation base 3 consists of a vegetable fiber or synthetic fiber and covers the floats 2 so that hydrophytes such as reed, toad and willow can grow to cover the island. The container 4 is prepared by depositing bacteria having a purifying effect for water on porous ceramic particles or the like or fixing particles 4a in a polymer gel containing water and then sealing the particles in a water-permeable container 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Technical field to which the present invention pertains] For the destruction of nature caused by the development of dams, lakes, marshes, rivers, etc., resting places or fish for purifying water quality and greening the water surface without harming the landscape and protecting wild birds. It is intended to protect the natural environment by providing a spawning site for breeding of aquatic organisms of insects.

[0002]

2. Description of the Related Art As a method for purifying the water quality of rivers, lakes and marshes, particles such as granular or spherical ceramics on which microorganisms having a water quality purifying action are grown and adhered are sprayed. In addition, microorganisms are adsorbed to the contact filter medium, and water quality is purified by the adsorbed microorganisms. On the other hand, natural destruction such as reduction of tidal flats or seaweed beds due to development progress has been progressing, and places of rest for wild birds or spawning places for aquatic organisms of fish and insects are decreasing, and floating islands have been established as a countermeasure. ing.

[0003]

In the case of spraying particles on which microorganisms having a water purification action are grown and adhered, the action of the microorganisms stays near the bottom of the water due to sedimentation and cannot be exerted if buried in earth and sand or mud. In addition, rivers and lakes with flowing water are washed away by the flow.

[0004] In order to lay a contact filter medium, a float or the like for holding the filter medium in water is required, and there has been a problem that the natural landscape is spoiled.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, in the present invention, microorganisms having a water purification effect are retained in a vegetation base material of a vegetation floating island, and the water purification effect of the vegetation floating island is enhanced and maintained. By laying a contact filter medium in water without damaging the landscape with floating vegetation floating islands and adsorbing microorganisms on the contact filter medium, extremely efficient water purification can be performed from the surface layer to the deep water.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a water-permeable container enclosing particles immobilized with microorganisms having a water purification effect is inserted into a vegetation base material of a vegetation floating island.

A plurality of contact filter media made of a porous synthetic resin having a function of adsorbing microorganisms are hung on the lower surface of the floating vegetation island.

The vegetation floating island has a plurality of floats and a vegetation base material arranged on a mesh plate made of a hard resin on the lower surface, the upper surface is covered with a net, and the periphery is formed in an overhanging bag shape on the periphery of the mesh plate. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, FIG. 1 is a sectional view of the present embodiment, and FIG. 2 is a plan view (one-part sectional view) of a mesh plate 1 made of a hard resin. A plurality of floats 2 and a vegetation base material 3 are arranged, a microorganism container 4 in which particles 4a in which microorganisms having a water purification effect are immobilized is inserted into the vegetation base material 3, and the upper surface is covered with a net 5 and On the periphery of the mesh plate 1 on the lower surface.

The vegetation base material 3 is made of plant fiber such as palm fiber or palm fiber or synthetic fiber such as nylon or polyester, and is covered with a float 1 to cover a plant such as a roof, a makomo, a gama, a willow or the like. Is established so that the floating island is covered by aquatic plants. 7 is a mooring line for mooring a floating vegetation island.

Reference numeral 4 denotes microorganisms having a water-purifying action, such as aerobic actinomycetes, denitrifying bacteria, and phosphate-accumulating bacteria, adhered to porous ceramic particles or the like, or immobilized by taking them into a polymer hydrogel. Particle 4a permeable container 4b
For example, it is sealed in a cloth bag, a synthetic resin container having pores, or the like, and is inserted into the vegetation base material 3 to remarkably enhance the water purification action of the vegetation floating island.

A plurality of contact filter media 6 are laid down from the mesh plate 1 on the lower surface of the floating vegetation island. The contact filter medium 6 is made of a porous synthetic resin having a function of adsorbing microorganisms,
In addition to purifying the water quality by the adsorbed microorganisms, the microorganisms that have absorbed and accumulated inorganic nutrients such as phosphorus and nitrogen in the water are adsorbed, so that these salts can be efficiently removed without precipitating on the water bottom.

[0013]

The present invention is embodied in the form described above and has the following effects.

By inserting a water-permeable container enclosing particles in which microorganisms having a water-purifying action are immobilized in a vegetation base material, microorganisms multiplied by water flowing through the container diffuse to the vegetation floating island and its surroundings. In addition, the water purification action of the vegetation floating island can be significantly improved.

Dropping a plurality of contact filter media made of a porous synthetic resin having a function of adsorbing microorganisms on the lower surface of the vegetation floating island not only purifies the water quality from the surface layer to the deep water, but also removes phosphorus in the water. Since the microorganisms that have absorbed and accumulated inorganic nutrients such as nitrogen are adsorbed, these salts can be efficiently removed without precipitating on the water bottom.

Vegetation The roots of aquatic plants are planted on the vegetation base material of the floating island, thereby purifying the water quality and greening the water surface without impairing the landscape, and providing a resting place for protecting birds or the propagation of aquatic organisms such as fish and insects. Providing a spawning site for breeding can protect nature.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one example of a vegetation floating island of the present invention.

FIG. 2 is a plan view (a partial cross-sectional view) of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mesh board 2 Float 3 Vegetation base material 4 Microorganism container 5 Net 6 Contact filter media 7 Mooring line

Claims (3)

[Claims] 1. A vegetation floating island comprising a vegetation floating island and a water-permeable container enclosing particles in which microorganisms having a water purification effect are immobilized in a vegetation base material. 2. A floating vegetation island according to claim 1, wherein a plurality of contact filter media made of a porous synthetic resin for adsorbing microorganisms are hung on the lower surface of the floating vegetation island according to claim 1. 3. The vegetation floating island according to claim 1, wherein a plurality of floats and a vegetation base material are arranged on a mesh plate made of a hard resin on a lower surface, an upper surface is covered with a net, and a peripheral edge is the mesh plate. A vegetation floating island characterized by an overhanging bag shape around the periphery of the vegetation.